Is The Growth of ANDROID OS a threat to Linux - malware etc?

[newtusmaximus]

With hackers etc. targeting the popular OS and browsers etc, MS Windows and associated software have been the target of malware, viruses etc.  Android OS is now the next obvious target with all the mobile internet of things- phones, tablets Chromebooks etc.  Isn't Android based on linux, and if so, will that eventually make linux OS flavours  more vulnerable i.e risking the safety of linux as an OS.

I understand that there are some MAC OS viruses - because of the market share of IPADs?

Are we DOOOMED